Vehicle carrying device

Abstract

The utility model relates to the technical field of vehicle carrying, in particular to a vehicle carrying device. A vehicle carrying device comprises a chassis provided with walking wheels; the lifting disc is used for bearing a transport vehicle; in the height direction, the lifting disc can ascend and descend relative to the chassis. The driving mechanism is used for driving the lifting disc to ascend and descend, and the lifting disc can ascend and descend to a target parking space through the driving mechanism; the driving mechanism comprises a climbing track, a climbing part and a driving part, the climbing track is arranged on the chassis, the climbing part is arranged on the lifting disc, and the climbing part can climb or descend in the height direction of the climbing track; the driving part is connected with the climbing part and used for driving the climbing part to ascend and descend. The utility model provides a vehicle carrying device which has a lifting function and reduces the cost of a double-layer parking space.

Description

Technical Field

[0001] This application relates to the field of vehicle handling technology, and in particular to a liftable vehicle handling device. Background Technology

[0002] AGV (Automated Guided Vehicle) transporters have demonstrated significant advantages in the intelligent parking industry. Currently, existing AGV transporters are typically suitable for transporting vehicles between parking spaces on a single level. For multi-level parking systems, vehicles cannot be directly transported from the upper levels. Typically, lifting devices are installed on each level to lower the vehicles to the lower level, where the AGV transporter then removes them from the parking space. In existing double-level parking garages, space is reserved for the operation of lifting devices, requiring a specific height for the first-level parking spaces, thus increasing construction costs. Utility Model Content

[0003] Therefore, it is necessary to provide a vehicle handling device with lifting function to reduce the cost of double-layer parking spaces.

[0004] A vehicle handling device, comprising:

[0005] A chassis, on which are provided wheels;

[0006] A lifting platform is used to support and transport vehicles; the lifting platform can move up and down relative to the chassis along the height direction.

[0007] A drive mechanism is used to drive the lifting platform to perform lifting and lowering actions. The lifting platform can be raised and lowered to the target parking space through the drive mechanism. The drive mechanism includes a climbing rail, a climbing component, and a drive component. The climbing rail is provided on the chassis, the climbing component is provided on the lifting platform, and the climbing component can climb or descend along the height direction of the climbing rail. The drive component is connected to the climbing component and is used to drive the climbing component to perform lifting and lowering actions.

[0008] In one embodiment, the climbing member is rotatably mounted on the lifting plate, and the climbing member can move up and down along the height direction of the climbing track by rotating; the driving member is connected to the climbing member and is used to drive the climbing member to rotate.

[0009] In one embodiment, the climbing members are configured as a plurality of them, which are respectively disposed on opposite sides of the climbing track; the driving mechanism further includes a synchronous transmission member, and the plurality of climbing members are respectively connected to the synchronous transmission member for transmission, and can rotate synchronously by means of the synchronous transmission member.

[0010] In one embodiment, the climbing member includes a gear, the climbing track includes a toothed condition, and the climbing member is meshed with the climbing track.

[0011] In one embodiment, the drive mechanism is configured as at least two sets, with multiple sets of drive mechanisms located on opposite sides of the lifting plate, and the oppositely arranged drive mechanisms are connected by transmission components.

[0012] In one embodiment, the drive mechanism further includes a plurality of guide members, which are connected to the lifting plate and form a guide space that cooperates with the climbing track.

[0013] In one embodiment, the guide includes a bracket and rollers rotatably connected to the bracket. The bracket is connected to the lifting plate, the rollers are in rolling contact with the climbing track, and the rollers are capable of moving up and down along the height direction of the climbing track.

[0014] In one embodiment, the climbing track further includes a column, which is located at the center of the side of the chassis, and the toothed condition is provided on the column and extends along the height direction of the column.

[0015] In one embodiment, the vehicle transport device further includes a transporter for transporting vehicles, wherein after the lifting platform is raised to the destination parking space, the transporter can move back and forth between the lifting platform and the destination parking space.

[0016] In one embodiment, the lifting platform includes a platform body, side frames, and tie rods. The drive mechanism is mounted on the side frames, which are configured as two sets. The two sets of side frames are symmetrically arranged on opposite sides of the platform body, and there is a gap between the two sets of side frames for vehicles and the transporter to pass through. The tie rods are inclined, with one end connected to the side frames and the other end connected to the platform body.

[0017] Compared to existing technologies, the vehicle handling device is equipped with a lifting platform. A drive mechanism raises and lowers the platform to the target parking space, and a transporter moves the vehicle from the parking space to the parking space, thus completing the storage and retrieval operation for the upper level parking space in a double-layer parking system. Therefore, a simple double-layer frame structure is sufficient for double-layer parking spaces, eliminating the need for a lift in each parking space and reducing the height of the lower parking spaces, significantly lowering construction costs. Furthermore, there is no need to lower the upper parking space to the first level before operation; the vehicle handling device can complete the lifting and lowering operation during movement, directly storing and retrieving the upper-level vehicle upon arrival at the parking space, greatly saving time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the vehicle handling device provided in this application.

[0020] Figure 2 A side view of the vehicle handling device provided in this application.

[0021] Figure 3 A top view of the vehicle handling device provided in this application.

[0022] Figure 4 A schematic diagram of the drive mechanism of the vehicle handling device provided in this application.

[0023] Figure 5 for Figure 4 A schematic diagram of the test structure for the components.

[0024] Figure 6 for Figure 5 A top view of the structure of the components.

[0025] Figure 7 A partial structural schematic diagram of the drive mechanism provided in this application.

[0026] Figure 8 This is a schematic diagram of the synchronous transmission component in the drive mechanism provided in this application.

[0027] Figure 9 for Figure 1 A partial structural diagram.

[0028] Figure 10 for Figure 9 Side view of the component.

[0029] Figure 11 for Figure 10 Top view of the components.

[0030] Figure 12 A schematic diagram showing the lifting platform of the vehicle handling device provided in this application carrying a vehicle and raising it to be level with the second-floor parking space.

[0031] Reference numerals: 1. Chassis; 2. Lifting platform; 21. Platform body; 22. Side frame; 23. Tie rod; 24. Bearing seat; 3. Drive mechanism; 31. Climbing track; 311. Gear; 312. Column; 32. Climbing component; 321. Gear component; 322. Rotating shaft; 323. First sprocket; 324. Second sprocket; 325. Chain; 33. Drive component; 4. Transporter; 5. Traveling wheel; 6. Transmission component; 7. Synchronous transmission component; 8. Guide component; 81. Guide space; 82. Support; 83. Roller; 831. Roller one; 832. Roller two. Detailed Implementation

[0032] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0033] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0037] Please see Figures 1 to 12 This application provides a vehicle handling device, including a chassis 1, a lifting platform 2, and a drive mechanism 3. The chassis 1 is equipped with wheels 5. The lifting platform 2 is used to carry and transport vehicles. The lifting platform 2 can move up and down relative to the chassis 1 along the height direction. The drive mechanism 3 is used to drive the lifting platform 2 to move up and down. The lifting platform 2 can be raised and lowered to the target parking space via the drive mechanism 3. The drive mechanism 3 includes a climbing rail 31, a climbing member 32, and a drive member 33. The climbing rail 31 is disposed on the chassis 1, and the climbing member 32 is disposed on the lifting platform 2, and the climbing member 32 can climb or descend along the height direction of the climbing rail 31. The drive member 33 is connected to the climbing member 32 and is used to drive the climbing member 32 to move up and down.

[0038] Understandably, the traveling wheels 5 drive the chassis 1 and the lifting platform 2 to move and steer, while the drive mechanism 3 drives the lifting platform 2 to rise and fall relative to the chassis 1. The lifting platform 2 is initially in an unraised state. When retrieving a vehicle from the upper level of a double-layer parking space, the traveling wheels 5 drive the chassis 1 to move the lifting platform 2 towards the parking space. During or after the movement, the drive mechanism 3 drives the lifting platform 2 to move upwards relative to the chassis 1. Once the lifting platform 2 is level with the upper parking space, the drive mechanism 3 stops. Then, with the help of a transporter 4, the vehicle on the lifting platform 2 is stored in the parking space / the transporter 4 moves to the parking space and retrieves the vehicle from the parking space onto the lifting platform 2, completing the upper-level parking space retrieval operation.

[0039] In this method, double-layer parking spaces only require a simple double-layer frame structure, eliminating the need for a lift in each space and reducing the height of the bottom parking spaces, thus significantly lowering construction costs. Secondly, when storing or retrieving vehicles, there's no need to lower the upper level before operation; the vehicle transport device can complete the lifting operation during movement, allowing direct access to the upper-level vehicle upon arrival, greatly saving time. Utilizing a climbing mechanism to drive the lifting platform offers greater flexibility and more controllable lifting speed compared to hydraulic, pneumatic, or cross-scissor lifting methods.

[0040] Furthermore, the climbing member 32 is rotatably mounted on the lifting platform 2, and the climbing member 32 can move up and down along the height direction of the climbing track 31 by rotating. The driving member 33 is connected to the climbing member 32 and is used to drive the climbing member 32 to rotate.

[0041] Understandably, the climbing component 32 moves on the climbing track 31 by rotating, which can achieve a faster movement speed. Especially when the lifting plate 2 is unloaded, its weight is relatively light, and the climbing component 32 can drive the lifting plate 2 to move quickly, improving the working efficiency of the device.

[0042] For example, the climbing component 32 includes a gear component 321, and the climbing track 31 includes a toothed component 311. The climbing component 32 and the climbing track 31 are meshed and connected. The gear and rack meshing lifting method makes it difficult for slippage to occur between the two, and always provides stable support for the lifting plate 2, ensuring the stable operation of the device and accurate positioning, with little risk of deviation.

[0043] For example, the gear component 321 can be a gear directly, or it can be a workpiece with multiple protrusions on its outer circumference to form a gear-like shape, as long as it satisfies the meshing connection with the rack. The gear condition 311 can be a rack directly, or it can be a workpiece with multiple slots or grooves on its sidewall to form a rack-like shape, as long as it satisfies the meshing connection with the gear.

[0044] In one embodiment, the climbing member 32 further includes a rotating shaft 322 and a first sprocket 323. The rotating shaft 322 is located at the center of the gear member 321, coaxially arranged with the gear member 321, and rotates synchronously. The first sprocket 323 is sleeved on the rotating shaft 322 and rotates synchronously with the rotating shaft 322. A second sprocket 324 is provided on the output shaft of the driving member 33, and the first sprocket 323 and the second sprocket 324 are connected by a chain 325. That is, the chain 325 is sleeved outside the first sprocket 323 and the second sprocket 324. When the output shaft of the driving member 33 rotates, it drives the second sprocket 324 to rotate. The second sprocket 324 drives the first sprocket 323 to rotate after being driven by the chain 325. The first sprocket 323 drives the rotating shaft 322 to rotate, and the rotating shaft 322 drives the gear member 321 to rotate. This avoids the stress being directly transmitted to the output shaft of the driving member 33, thus preventing damage to the driving member 33. Secondly, in this method, the drive component 33 can be set away from the location of the gear component 321, which makes better use of space.

[0045] In one embodiment, the climbing track 31 further includes a column 312, which is located at the center of the side of the chassis. A gear 311 is provided on the column 312 and extends along the height direction of the column 312. When the drive mechanism 3 is configured with two sets, there are also two columns 312 on the chassis, which are respectively located on opposite sides of the chassis. After the lifting platform 2 is supported by two opposing positions, stable lifting can be achieved. Only two columns 312 are needed to achieve a balancing effect, simplifying the overall vehicle structure and reducing mechanical costs.

[0046] For example, the drive component 33 may be a motor. The rotating shaft 322 is integrally formed with the gear component 321, and the sprocket is connected to the rotating shaft 322 by a pin to prevent rotation. The gear condition 311 is fixed to the column 312 by welding, or the gear condition 311 may be directly integrally formed with the column 312.

[0047] Furthermore, the drive mechanism 3 is configured as at least two sets, with multiple sets of drive mechanisms 3 located on opposite sides of the lifting plate 2, and the drive mechanisms 3 arranged opposite to each other are connected by transmission components 6.

[0048] In this embodiment, the drive mechanism 3 is configured as two sets, which are respectively arranged on opposite sides of the lifting plate 2. The two sets of drive mechanisms 3 synchronously drive the lifting plate 2, applying a force to the opposite sides of the lifting plate 2 to ensure the balance of the lifting plate 2 during its vertical movement. Of course, in other embodiments, the drive mechanism 3 can also be configured as an even number of sets, such as four or six sets, symmetrically arranged on opposite sides of the lifting plate 2 to ensure a stable and balanced force for the lifting plate 2.

[0049] In this embodiment, the transmission component 6 is a transmission rod, and its two ends are respectively connected to the climbing component 32 in the corresponding drive mechanism 3. The transmission component 6 and the climbing component 32 are coaxially connected and rotate synchronously. Only one side of the drive mechanism 3 is equipped with a drive component 33, and the climbing component 32 on that side is driven by the drive component 33 to rotate actively. The climbing component 32 on the other side rotates passively after being transmitted by the transmission component 6. In this way, only a drive component 33 needs to be provided on one side, reducing the investment in electrical components and lowering the cost and energy consumption of the device.

[0050] Of course, this is not the only option. Both drive mechanisms 3 on both sides can be equipped with drive components 33, and the transmission component 6 can be used only to maintain the synchronous movement of the drive mechanisms 3 on both sides. Alternatively, the transmission component 6 can be omitted, and the drive components 33 on both sides can be controlled to work synchronously by the controller, as long as the synchronous movement of the climbing components 32 in the two sets of drive mechanisms 3 is satisfied.

[0051] like Figures 6-8As shown, each set of drive mechanisms 3 includes multiple climbing members 32, which are distributed on opposite sides of the climbing track 31. The drive mechanism 3 also includes a synchronous transmission member 7, which drives the multiple climbing members 32 to rotate synchronously.

[0052] Understandably, climbing components 32 are provided on both sides of the climbing track 31. The lifting plate 2 is driven to move by the cooperation of multiple climbing components 32 and the climbing track 31. The weight transported by the lifting plate 2 will be distributed to multiple climbing components 32, reducing the pressure on each climbing component 32, making it less prone to slippage and other malfunctions, and improving the accuracy of operation.

[0053] In this embodiment, the number of climbing members 32 in each group of drive mechanisms 3 is preferably set to two, and the two climbing members 32 are respectively arranged on opposite sides of the climbing track 31.

[0054] For example, the synchronizing transmission member 7 is configured as multiple meshing gears, located between two climbing members 32, with the gears closer to the climbing members 32 meshing with them. The rotation between the two climbing members 32 can be transmitted to each other through the synchronizing transmission member 7, so that the climbing members 32 located on both sides of the climbing track 31 maintain the same rotational speed, ensuring that there is no displacement deviation between them.

[0055] In this embodiment, each of the two climbing members 32 is connected to a driving member 33, resulting in two driving members 33 and improved driving performance. In other embodiments, only one driving member 33 may be provided, connected to only one of the climbing members 32, with the other climbing member 32 rotating passively after receiving power from the synchronous transmission member 7. This further reduces the number of driving members 33, lowering device cost and energy consumption.

[0056] like Figures 9-11 As shown, the drive mechanism 3 also includes multiple guide members 8, which are connected to the lifting plate 2, and the multiple guide members 8 surround and form a guide space 81 that cooperates with the climbing track 31.

[0057] Understandably, during the lifting and lowering process of the lifting platform 2, the guide space 81 formed by the multiple guide members 8 always covers the outside of the climbing rail 31. When the lifting platform 2 shifts in one direction, the distance between the guide space 81 and the climbing rail 31 in that direction will decrease. After they come into contact, they restrict the lifting platform 2 from further shifting. Thus, by utilizing the cooperation between the climbing rail 31 and the guide space 81, the lifting platform 2 is guided and positioned during the lifting and lowering process, preventing it from shifting its position.

[0058] Furthermore, the guide member 8 includes a bracket 82 and a roller 83 rotatably connected to the bracket 82. The bracket 82 is connected to the lifting platform 2 on one side near the lifting platform 2, and the roller 83 is connected to the other side. The roller 83 rolls in contact with the climbing rail 31 and is capable of moving up and down along the height direction of the climbing rail 31.

[0059] Preferably, three guide members 8 are provided, corresponding to the three sides of the climbing track 31 respectively. The guide space 81 formed by a single guide member 8 is a C-shape with an opening on one side, and the climbing track 31 is placed within the opening on that side. The roller 83 of one guide member 8 rolls in contact with the inside of the column 312 and rolls within the inside of the column 312. The other two guide members 8 are respectively located on both sides of the climbing track 31.

[0060] Preferably, the guide members 8, located on both sides of the climbing track 31, have rollers 83 configured as roller 1 831 and roller 2 832. Roller 1 831 rolls in contact with the side of the column 312 and travels along the side of the column 312. Roller 2 832 rolls in contact with the outer side of the gear condition 311 (i.e., the side of the gear condition 311 away from the lifting plate 2) and travels along the outer side of the gear condition 311. In this configuration, the direction of movement restriction between the guide member 8 and the guide space 81 is further enhanced by the outer side of the gear member 321, resulting in better positioning.

[0061] In one embodiment, the vehicle handling device further includes a transporter 4 for transporting vehicles. After the lifting platform 2 is raised and lowered to the target parking space, the transporter 4 can move back and forth between the lifting platform 2 and the target parking space. When it is necessary to perform a vehicle storage or retrieval operation for the upper parking space of a double-layer parking space, the transporter 4 first moves onto the lifting platform 2 (or the transporter 4 is initially located on the lifting platform 2). After it moves to be level with the upper parking space, the vehicle storage or retrieval operation is performed through the transporter 4.

[0062] In one embodiment, the lifting platform 2 includes a platform body 21, side frames 22, and tie rods 23. Two sets of side frames 22 are symmetrically arranged on opposite sides of the platform body 21, with a gap between them allowing vehicles and transporters 4 to pass through. A drive mechanism 3 is mounted on the side frames 22. The tie rods 23 are inclined, with one end connected to the side frames 22 and the other end connected to the platform body 21.

[0063] Furthermore, the aforementioned drive component 33, climbing component 32, etc., are all mounted on the side frame 22. A rotating shaft 322 passes through the side frame 22, and a bearing seat 24 is provided on the side frame 22 corresponding to the position of the rotating shaft 322, allowing the rotating shaft 322 to rotate relative to the bearing seat 24. A transmission component 6 is located below the disc body 21, with both ends extending out from both sides of the disc body 21 and connected to the rotating shaft 322 at corresponding positions, thus achieving a transmission connection between the transmission component 6 and the climbing component 32.

[0064] For example, a walking motor is provided at the pivot 322 of the walking wheel 5, which controls the rotation of the walking wheel 5 to drive the chassis 1 to move. The walking motor can be an L-type geared motor. The transporter 4 can be a transport robot, the structure of which will not be described in detail.

[0065] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A vehicle handling device, characterized in that, include: A chassis (1) is provided with wheels (5); Lifting platform (2), used to support transport vehicles; Along the height direction, the lifting plate (2) can move up and down relative to the chassis (1); A drive mechanism (3) is used to drive the lifting plate (2) to perform lifting and lowering actions. The lifting plate (2) can be lifted and lowered to the target parking space through the drive mechanism (3). The drive mechanism (3) includes a climbing rail (31), a climbing component (32) and a drive component (33). The climbing rail (31) is located on the chassis (1). The climbing component (32) is located on the lifting plate (2). The climbing component (32) can climb or descend along the height direction of the climbing rail (31). The drive component (33) is connected to the climbing component (32) and is used to drive the climbing component (32) to perform lifting and lowering actions.

2. The vehicle handling device according to claim 1, characterized in that, The climbing member (32) is rotatably mounted on the lifting plate (2), and the climbing member (32) can move up and down along the height direction of the climbing track (31) by rotating; the driving member (33) is connected to the climbing member (32) and is used to drive the climbing member (32) to rotate.

3. The vehicle handling device according to claim 2, characterized in that, The climbing member (32) is configured as a plurality of such climbing members (32) and is disposed on opposite sides of the climbing track (31); the driving mechanism (3) further includes a synchronous transmission member (7), and the plurality of climbing members (32) are respectively connected to the synchronous transmission member (7) for transmission, and can rotate synchronously by means of the synchronous transmission member (7).

4. The vehicle handling device according to claim 2, characterized in that, The climbing component (32) includes a gear component (321), the climbing track (31) includes a toothed component (311), and the climbing component (32) is meshed with the climbing track (31).

5. The vehicle handling device according to claim 1, characterized in that, The drive mechanism (3) is configured as at least two sets, and multiple sets of the drive mechanism (3) are located on opposite sides of the lifting plate (2). The drive mechanisms (3) arranged opposite to each other are connected by transmission components (6).

6. The vehicle handling device according to claim 1, characterized in that, The drive mechanism (3) also includes a plurality of guide members (8), which are connected to the lifting plate (2) and form a guide space (81) that cooperates with the climbing track (31).

7. The vehicle handling device according to claim 6, characterized in that, The guide (8) includes a bracket (82) and a roller (83) that is rotatably connected to the bracket (82). The bracket (82) is connected to the lifting plate (2). The roller (83) is in rolling contact with the climbing track (31) and can move up and down along the height direction of the climbing track (31).

8. The vehicle handling device according to claim 4, characterized in that, The climbing track (31) also includes a column (312), which is located at the center of the side of the chassis (1). The tooth condition (311) is provided on the column (312) and extends along the height direction of the column (312).

9. The vehicle handling device according to claim 1, characterized in that, The vehicle transport device also includes a transporter (4) for transporting vehicles. After the lifting platform (2) is raised to the target parking space, the transporter (4) can move back and forth between the lifting platform (2) and the target parking space.

10. The vehicle handling device according to claim 9, characterized in that, The lifting platform (2) includes a platform body (21), a side frame (22) and a pull rod (23). The driving mechanism (3) is mounted on the side frame (22). The side frame (22) is configured as two sets, and the two sets of side frames (22) are symmetrically arranged on the opposite side of the platform body (21). There is a gap between the two sets of side frames (22) for the vehicle and the transporter (4) to pass through. The pull rod (23) is inclined, and one end of the pull rod (23) is connected to the side frame (22) and the other end is connected to the platform body (21).

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